P1271 【深基9.例1】选举学生会

有两个测试点报RE，说

Received signal 11: Segmentation fault with invalid memory reference.

#include<bits/stdc++.h>
using namespace std;
int a[10009];
int main(){
	int n,m;
	cin>>n>>m;
	for(int i = 1;i<=m;i++){
		cin>>a[i];
	}
	for(int i = m;i>=1;i--){
		for(int j = 0;j<=i-1;j++){
			if(a[j]>a[j+1]){
				swap(a[j],a[j+1]); 
			}
		}
	}
	for(int i = 1;i<=m;i++){
		cout<<a[i]<<' ';
	}
	return 0;
}